Backfocus of a Schneider 240 tele xenar

[patrickjames]

does anyone know the backfocus distance for a schneider tele xenar 240mm? Actually I would also like to know the same for a tele xenar 180. If anyone has any recommendations for a lens of a telephoto design in this focal range I am all ears.

Thanks

[David A. Goldfarb]

Should be at www.schneideroptics.com. I think you need to find the link called "vintage lens data" under the "help" section.

Tele-Artons usually have a bigger image circle and will be sharper over a larger range, but Tele-Xenars are usually more compact. What format are you shooting?

[patrickjames]

4x5 but with a limited draw

[MikeS]

Should be at www.schneideroptics.com. I think you need to find the link called "vintage lens data" under the "help" section.

Unfortunately the shortest tele-xenar listed on their site is the 360mm f5.5 (luckily for me that's the one I have )

-Mike

[Ole]

There are pdf's at http://www.schneiderkreuznach.com/archiv/archiv.htm with all the old brochures. You'll find it there.